| \0 | 37B-01-11101 | ENGINE, ASSY. | |
| 1 | YM129407-21100 | CRANKSHAFT, ASSY. | |
| 2 | YM129100-01580 | PEG | |
| 4 | YM129150-21200 | GEAR | |
| 5 | YM22512-070140 | KEY | |
| 7 | YM22351-040010 | PIN | |
| 8 | YM171301-21650 | PULLEY | |
| 9 | YM129795-21661 | WASHER | |
| 10 | YM121850-21680 | BOLT | |
| 11 | YM121111-21501 | SCREW | |
| 12 | YM129489-21590 | FLYWHEEL | |
| 14 | YM119865-21600 | GEAR, RING | |
| 15 | YM129001-22070 | PISTON, ASSY. | |
| 15 | YM129001-22930 | ASSY, PISTON (+0.25 mm) | |
| 17 | YM129001-22500 | RING SET, PISTON | |
| 17 | YM129001-22950 | RING SET (+0.25 mm) | |
| 21 | YM129202-22300 | PIN | |
| 22 | YM22252-000260 | CIRCLIP | |
| 23 | YM729402-23100 | CONNECTING ROD, ASSY. | |
| 26 | YM129100-23910 | BUSHING | |
| 27 | YM121550-23200 | SCREW | |
| 28 | YM129150-23600 | BEARING | |
| 28 | YM129150-23610 | BEARING (--0.25 mm) |
